mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 01:31:55 +00:00
135 lines
2.6 KiB
C
135 lines
2.6 KiB
C
/*
|
|
* BIRD Library
|
|
*
|
|
* (c) 1998--2004 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_BIRDLIB_H_
|
|
#define _BIRD_BIRDLIB_H_
|
|
|
|
#include "timer.h"
|
|
#include "alloca.h"
|
|
|
|
/* Ugly structure offset handling macros */
|
|
|
|
#define OFFSETOF(s, i) ((size_t) &((s *)0)->i)
|
|
#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))
|
|
#define BIRD_ALIGN(s, a) (((s)+a-1)&~(a-1))
|
|
|
|
/* Utility macros */
|
|
|
|
#define MIN_(a,b) (((a)<(b))?(a):(b))
|
|
#define MAX_(a,b) (((a)>(b))?(a):(b))
|
|
|
|
#ifndef PARSER
|
|
#undef MIN
|
|
#undef MAX
|
|
#define MIN(a,b) MIN_(a,b)
|
|
#define MAX(a,b) MAX_(a,b)
|
|
#endif
|
|
|
|
#define ABS(a) ((a)>=0 ? (a) : -(a))
|
|
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a)))
|
|
|
|
#ifndef NULL
|
|
#define NULL ((void *) 0)
|
|
#endif
|
|
|
|
#ifndef IPV6
|
|
#define IP_VERSION 4
|
|
#else
|
|
#define IP_VERSION 6
|
|
#endif
|
|
|
|
|
|
/* Macros for gcc attributes */
|
|
|
|
#define NORET __attribute__((noreturn))
|
|
#define UNUSED __attribute__((unused))
|
|
|
|
|
|
/* Microsecond time */
|
|
|
|
typedef s64 btime;
|
|
|
|
#define S_ *1000000
|
|
#define MS_ *1000
|
|
#define US_ *1
|
|
#define TO_S /1000000
|
|
#define TO_MS /1000
|
|
#define TO_US /1
|
|
|
|
#ifndef PARSER
|
|
#define S S_
|
|
#define MS MS_
|
|
#define US US_
|
|
#endif
|
|
|
|
|
|
/* Logging and dying */
|
|
|
|
typedef struct buffer {
|
|
byte *start;
|
|
byte *pos;
|
|
byte *end;
|
|
} buffer;
|
|
|
|
#define STACK_BUFFER_INIT(buf,size) \
|
|
do { \
|
|
buf.start = alloca(size); \
|
|
buf.pos = buf.start; \
|
|
buf.end = buf.start + size; \
|
|
} while(0)
|
|
|
|
#define LOG_BUFFER_INIT(buf) \
|
|
STACK_BUFFER_INIT(buf, LOG_BUFFER_SIZE)
|
|
|
|
#define LOG_BUFFER_SIZE 1024
|
|
|
|
|
|
struct rate_limit {
|
|
bird_clock_t timestamp;
|
|
int count;
|
|
};
|
|
|
|
#define log log_msg
|
|
void log_commit(int class, buffer *buf);
|
|
void log_msg(char *msg, ...);
|
|
void log_rl(struct rate_limit *rl, char *msg, ...);
|
|
void die(char *msg, ...) NORET;
|
|
void bug(char *msg, ...) NORET;
|
|
|
|
#define L_DEBUG "\001" /* Debugging messages */
|
|
#define L_TRACE "\002" /* Protocol tracing */
|
|
#define L_INFO "\003" /* Informational messages */
|
|
#define L_REMOTE "\004" /* Remote protocol errors */
|
|
#define L_WARN "\005" /* Local warnings */
|
|
#define L_ERR "\006" /* Local errors */
|
|
#define L_AUTH "\007" /* Authorization failed etc. */
|
|
#define L_FATAL "\010" /* Fatal errors */
|
|
#define L_BUG "\011" /* BIRD bugs */
|
|
|
|
void debug(char *msg, ...); /* Printf to debug output */
|
|
|
|
/* Debugging */
|
|
|
|
#if defined(LOCAL_DEBUG) || defined(GLOBAL_DEBUG)
|
|
#define DBG(x, y...) debug(x, ##y)
|
|
#else
|
|
#define DBG(x, y...) do { } while(0)
|
|
#endif
|
|
|
|
#ifdef DEBUGGING
|
|
#define ASSERT(x) do { if (!(x)) bug("Assertion `%s' failed at %s:%d", #x, __FILE__, __LINE__); } while(0)
|
|
#else
|
|
#define ASSERT(x) do { } while(0)
|
|
#endif
|
|
|
|
/* Pseudorandom numbers */
|
|
|
|
u32 random_u32(void);
|
|
|
|
#endif
|